相关疑难解决方法(0)

什么是元类,我们用它们做什么？

我正在用Python编写脚本并遇到一些问题:

class LightDMUser(QObject):
  def __init__(self, user):
    super(LightDMUser, self).__init__()
    self.user = user

  @pyqtProperty(QVariant)
  def background(self):      return self.user.get_background()

  @pyqtProperty(QVariant)
  def display_name(self):    return self.user.get_display_name()

  @pyqtProperty(QVariant)
  def has_messages(self):    return self.user.get_has_messages()

  @pyqtProperty(QVariant)
  def home_directory(self):  return self.user.get_home_directory()

  @pyqtProperty(QVariant)
  def image(self):           return self.user.get_image()

  @pyqtProperty(QVariant)
  def language(self):        return self.user.get_language()

  @pyqtProperty(QVariant)
  def layout(self):          return self.user.get_layout()

  @pyqtProperty(QVariant)
  def layouts(self):         return self.user.get_layouts()

  @pyqtProperty(QVariant)
  def logged_in(self):       return self.user.get_logged_in()

  @pyqtProperty(QVariant)
  def name(self):            return self.user.get_name()

  @pyqtProperty(QVariant)
  def real_name(self):       return self.user.get_real_name()

  @pyqtProperty(QVariant)
  def session(self):         return self.user.get_session()

如您所见,此代码非常多余.我尝试像这样冷凝它:

class LightDMUser(QObject):
  attributes = ['background', 'display_name', 'has_messages', 'home_directory', …